Proflow Throttle Linkage, Mechanical Secondaries, Double Pumper, Suits Holley, 4150, 4010, Quick Fuel, Each
$24.57
Proflow Secondary Linkage fit all Holley double pumper carburettors, as well as Quick Fuel, and other Holley based carbs
Will also work on Sniper EFI to convert to progresive secondary opening